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Large capacitor question?

Discussion in 'General Electronics Discussion' started by supak111, Nov 9, 2012.

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  1. supak111

    supak111 ★ƃuᴉɯǝɥɔs sʎɐʍlɐ★

    Apr 29, 2012
    If I have a 450v 16,666uf Cap which is 1687 Joules, but I only charge the Cap to 220v DC does that mean my Cap now only has 403 Joules??

    So in other words if I lower the Caps Volts in half, Joules are 4 times less?

    Thanks guys.
  2. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    Jan 21, 2010
    yes, halve the voltage, quarter the energy stored.
  3. supak111

    supak111 ★ƃuᴉɯǝɥɔs sʎɐʍlɐ★

    Apr 29, 2012
    Ok so my calculation was right, thanks Steve
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